This chapter introduced us to storing data offline in React Native applications. The main reason we would want to store data locally is when the device goes offline and our app can't communicate with a remote API. However, not all applications require API calls and AsyncStorage can be used as a general-purpose storage mechanism. We just need to implement the appropriate abstractions around it.
We also learned how to detect changes in the network state of React Native apps. It's important to know when the device has gone offline so that our storage layer doesn't make pointless attempts at network calls. Instead, we can let the user know that the device is offline, and then synchronize the application state when a connection is available.
In the next chapter, we'll learn how to import and use UI components from the NativeBase library.